Example usage for java.net DatagramSocket DatagramSocket

Introduction

In this page you can find the example usage for java.net DatagramSocket DatagramSocket.

Prototype

public DatagramSocket(int port) throws SocketException

Source Link

Document

Constructs a datagram socket and binds it to the specified port on the local host machine.

Usage

From source file:uk.co.propter.sleeponlan.SleepService.java

private void openSocket() {
    try {// w w  w . j  a v a  2s  .  c o m
        socket = new DatagramSocket(listeningPort);
    } catch (SocketException e) {
        logger.severe("Could not bind socket on port " + listeningPort);
        logger.fine(e.getMessage());
        System.exit(1);
    }
}

From source file:org.openehealth.ipf.commons.ihe.core.atna.UdpServer.java

@Override
public void run() {

    byte[] buffer = new byte[BUFFER_SIZE];

    try {//from   w  w w. ja  v  a 2 s.co  m
        socket = new DatagramSocket(port);
        LOG.debug("UDP server started on port " + port);
    } catch (SocketException e) {
        LOG.error("cannot open datagram socket", e);
        return;
    }

    try {
        while (true) {
            DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
            socket.receive(packet);
            packets.add(packetToString(packet));
            countDown();
        }
    } catch (SocketException e) {
        LOG.debug("socket closed");
    } catch (IOException e) {
        LOG.error(e);
    }

}

From source file:org.vesalainen.nmea.processor.SNTPServer.java

@Override
public void run() {
    try {//from  w w w.j av  a  2s . c  om
        socket = new DatagramSocket(NTP_PORT);
        ntpMessage = new NtpV4Impl();
        DatagramPacket datagramPacket = ntpMessage.getDatagramPacket();

        while (true) {
            socket.receive(datagramPacket);
            log.info("NTP: received %s from %s %d", ntpMessage, datagramPacket.getAddress(),
                    datagramPacket.getPort());
            TimeStamp transmitTimeStamp = ntpMessage.getTransmitTimeStamp();
            ntpMessage.setLeapIndicator(LI_NO_WARNING);
            ntpMessage.setMode(MODE_SERVER);
            ntpMessage.setStratum(1);
            ntpMessage.setPrecision(-20);
            ntpMessage.setRootDelay(0);
            ntpMessage.setRootDispersion(0);
            ntpMessage.setReferenceId(ReferenceIdentifier.GPS);
            ntpMessage.setReferenceTime(TimeStamp.getNtpTime(clock.getZonedDateTime().toEpochSecond()));
            ntpMessage.setOriginateTimeStamp(transmitTimeStamp);
            long time = clock.millis();
            TimeStamp timeStamp = TimeStamp.getNtpTime(time);
            ntpMessage.setReceiveTimeStamp(timeStamp);
            ntpMessage.setTransmitTime(timeStamp);
            socket.send(datagramPacket);
            log.info("NTP: sent %s to %s %d diff=%d", ntpMessage, datagramPacket.getAddress(),
                    datagramPacket.getPort(), time - transmitTimeStamp.getTime());
        }
    } catch (Exception ex) {
        log.log(Level.SEVERE, ex, "");
    }
}

From source file:AvailablePortFinder.java

/**
 * Checks to see if a specific port is available.
 *
 * @param port the port to check for availability
 *//*from w w w  . j  a va2 s. co  m*/
public static boolean available(int port) {
    if (port < MIN_PORT_NUMBER || port > MAX_PORT_NUMBER) {
        throw new IllegalArgumentException("Invalid start port: " + port);
    }

    ServerSocket ss = null;
    DatagramSocket ds = null;
    try {
        ss = new ServerSocket(port);
        ss.setReuseAddress(true);
        ds = new DatagramSocket(port);
        ds.setReuseAddress(true);
        return true;
    } catch (IOException e) {
    } finally {
        if (ds != null) {
            ds.close();
        }

        if (ss != null) {
            try {
                ss.close();
            } catch (IOException e) {
                /* should not be thrown */
            }
        }
    }

    return false;
}

From source file:com.navercorp.pinpoint.profiler.sender.NioUdpDataSenderTest.java

@Before
public void setUp() throws SocketException {
    receiver = new DatagramSocket(PORT);
    receiver.setSoTimeout(1000);
}

From source file:com.chiralBehaviors.slp.hive.hardtack.configuration.AggregatorConfiguration.java

@Override
public Engine construct() throws IOException {
    NetworkInterface intf = getNetworkInterface();
    DatagramSocket socket;//from  www .  j a  va 2s.c om
    InetSocketAddress address;
    if (endpoint.getAddress().isAnyLocalAddress()) {
        address = new InetSocketAddress(Utils.getAddress(intf, ipv4), endpoint.getPort());
    } else {
        address = endpoint;
    }
    try {
        socket = new DatagramSocket(address);
    } catch (BindException e) {
        BindException bindException = new BindException(String.format("Cannot bind to %s", address));
        bindException.initCause(e);
        throw bindException;
    }
    return new AggregatorEngine(socket, getMac(), Executors.newSingleThreadScheduledExecutor(), getFdFactory());
}

From source file:org.proto.led.network.WiFiControllerService.java

private void listenAndWaitAndThrowIntent(InetAddress broadcastIP, Integer port) throws Exception {
    byte[] recvBuf = new byte[400];
    if (socket == null || socket.isClosed()) {
        socket = new DatagramSocket(port);
        socket.setSoTimeout(5000);/*from  w w w.  j a v a  2  s. c  o m*/
        socket.setBroadcast(true);
    }
    DatagramPacket packet = new DatagramPacket(recvBuf, recvBuf.length);
    Log.i(TAG, "Waiting for UDP broadcast");
    socket.receive(packet);

    String senderIP = packet.getAddress().getHostAddress();
    parseMessage(recvBuf, senderIP);
    String message = new String(packet.getData()).trim();
    Log.i(TAG, "Got UDP broadcast from " + senderIP + ", message: " + message);

    socket.close();
}

From source file:com.chiralBehaviors.slp.hive.hardtack.configuration.PushConfiguration.java

@Override
public Engine construct() throws IOException {
    NetworkInterface intf = getNetworkInterface();
    InetAddress address = Utils.getAddress(intf, ipv4);
    DatagramSocket p2pSocket = new DatagramSocket(new InetSocketAddress(address, Utils.allocatePort(address)));
    int i = 0;/*from  w  w  w.j av a2  s .  c  om*/
    for (InetSocketAddress aggregator : aggregators) {
        log.info(String.format("Adding aggregator: %s", aggregator));
        if (aggregator.getAddress().isAnyLocalAddress()) {
            aggregators.set(i++, new InetSocketAddress(address, aggregator.getPort()));
        }
    }
    return new PushEngine(p2pSocket, getMac(), Generators.timeBasedGenerator(), aggregators, heartbeatPeriod,
            heartbeatUnit, Executors.newSingleThreadScheduledExecutor());

}

From source file:org.jopenray.client.RendererListener.java

public int getPort() throws IOException {

    if (port < 0) {
        int rcvPort = 3000;
        int maxPort = 4000;
        while (rcvPort <= maxPort) {
            try {
                socket = new DatagramSocket(rcvPort);
                port = rcvPort;/*from  ww  w .  java 2 s  . co m*/
                return port;
            } catch (SocketException bind_ex) {
                rcvPort++;
            } catch (SecurityException sec_ex) {
                rcvPort++;
            }
        }

        throw new IOException("Unable to find an available port for UDP communication");
    }
    return port;
}

From source file:org.squidy.nodes.artracking.ARUDPServer.java

public ARUDPServer(ARTracking art, int port) {
    this.arTracking = art;

    try {//from w  ww  . j  a v a  2  s .  co m
        socket = new DatagramSocket(port);
        start();
        LOG.info("UDP Server started on port " + port);
    } catch (IOException e) {
        LOG.error("Couldn't start udp server on port " + port);
    }

}